[miguelrochefort]

1. Keep backup codes [1]

2. Download your data [2]

[1] https://support.google.com/accounts/answer/1187538

[2] https://support.google.com/accounts/answer/3024190

[eps]

I think the GP meant what if Google erroneously block access to your account for a supposed T&C violation or what have you.

[miguelrochefort]

Option 2. You can download all you data.